Lumsden, G., & Lumsden, D. (2000). Communicating in groups and teams: Sharing leadership (3rd ed.). Wadsworth Pub.
Lua i Stíl Chicago (17ú heag.)Lumsden, Gay, agus Donald Lumsden. Communicating in Groups and Teams: Sharing Leadership. 3rd ed. Belmont, Calif: Wadsworth Pub, 2000.
Lua MLA (9ú heag.)Lumsden, Gay, agus Donald Lumsden. Communicating in Groups and Teams: Sharing Leadership. 3rd ed. Wadsworth Pub, 2000.
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